NK
ClearNav
Manual
•
Version
0.5
•
July
3,
2008
Page
50
of
86
viewed
out
the
window
match
the
data
displayed
on
the
map.
Others
will
prefer
to
turn
off
the
Water
data
to
reduce
screen
clutter.
It
is
very
easy
to
turn
the
display
of
the
Water
data
on
an
off.
It
can
be
enabled
and
disabled
independently
of
the
Culture
and
Terrain
data.
•
Landable
Only
The
Landable
Only
checkbox
is
used
to
hide
any
waypoints
that
are
not
setup
in
the
waypoint
database
as
“landable”.
It
could
be
used
when
low
to
make
it
easy
to
view
only
airports
or
fields
which
can
be
used
for
landing.
The
default
setting
is
unchecked
–
so
that
all
waypoints
will
be
displayed
on
the
map,
whether
you
can
land
there
or
not.
Important
Note:
This
feature
is
only
as
good
as
the
data
in
the
waypoint
file.
If
the
waypoint
file
has
the
“Landable”
attribute
assigned
to
airports
that
are
not
wide
enough
or
long
enough
for
your
glider,
you
may
have
an
“interesting”
landing.
It
is
your
job
to
assure
that
the
data
in
the
waypoint
file
is
correct.
•
Tracks
The
Tracks
checkbox
is
used
the
enable
or
disable
the
display
of
glider
tracks
(“bread
crumbs”)
on
the
map.
The
tracks
can
be
extremely
helpful
for
re
‐
connecting
with
a
lift
source
that
was
used
minutes
our
hours
earlier
in
the
flight.
Tracks
are
enabled
by
default.
•
Erase
Tracks
The
Erase
Tracks
button
can
be
used
to
erase
all
the
flight
track
data
displayed
on
the
map.
It
does
not
affect
the
flight
log
data
in
the
flight
recorder.
One
situation
in
which
you
may
want
to
erase
the
tracks
is
when
the
wind
direction
has
changed
significantly
–
making
the
circle
tracks
on
the
map
from
thermals
earlier
in
the
day
useless.
The
Up
and
Down
buttons
are
used
to
move
through
the
options
and
the
Select
button
is
used
to
toggle
the
checkboxes
on
and
off
or
to
activate
the
Erase
Tracks
button.
To
exit
the
Show
On
Map
Window
press
the
Menu
or
Focus
button,
or
use
the
Up
and
Down
buttons
to
highlight
the
Exit
button
and
then
press
the
Select
button.
Summary of Contents for ClearNav
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